Example application not compiling

[mg7237]

Issues: exmple code provided on the pub dev site is not getting compiled. Details below:

Steps to Reproduce

1. Create new flutter application. Replace main.dart content with the example code.
2. Compile/Run the application (using Android studio).
   Note: URL for example code: https://pub.dev/packages/flutter_pdf_viewer/example

Logs

Running Gradle task 'assembleDebug'...
/Users/manishgupta/AndroidStudioProjects/flutter_app_example/android/app/src/debug/AndroidManifest.xml Error:
uses-sdk:minSdkVersion 16 cannot be smaller than version 19 declared in library [:flutter_pdf_viewer] /Users/manishgupta/AndroidStudioProjects/flutter_app_example/build/flutter_pdf_viewer/intermediates/library_manifest/debug/AndroidManifest.xml as the library might be using APIs not available in 16
Suggestion: use a compatible library with a minSdk of at most 16,
or increase this project's minSdk version to at least 19,
or use tools:overrideLibrary="com.pycampers.flutterpdfviewer" to force usage (may lead to runtime failures)

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:processDebugManifest'.

Manifest merger failed : uses-sdk:minSdkVersion 16 cannot be smaller than version 19 declared in library [:flutter_pdf_viewer] /Users/manishgupta/AndroidStudioProjects/flutter_app_example/build/flutter_pdf_viewer/intermediates/library_manifest/debug/AndroidManifest.xml as the library might be using APIs not available in 16
Suggestion: use a compatible library with a minSdk of at most 16,
or increase this project's minSdk version to at least 19,
or use tools:overrideLibrary="com.pycampers.flutterpdfviewer" to force usage (may lead to runtime failures)

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 39s
Exception: Gradle task assembleDebug failed with exit code 1

Flutter doctor:

Flutter (Channel master, 1.24.0-4.0.pre.82, on Mac OS X 10.15.7 19H2 darwin-x64, locale en-IN)
• Flutter version 1.24.0-4.0.pre.82 at /Users/manishgupta/StudioProjects/flutter
• Framework revision e5814756a2 (3 hours ago), 2020-10-27 01:47:03 -0700
• Engine revision 1857470267
• Dart version 2.11.0 (build 2.11.0-260.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
• Android SDK at /Users/manishgupta/Library/Android/sdk
• Platform android-29, build-tools 29.0.2
• Java binary at: /Applications/Dev Tools/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.7)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 11.7, Build version 11E801a
• CocoaPods version 1.9.1

[✓] Android Studio (version 4.1)
• Android Studio at /Applications/Dev Tools/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] Connected device (1 available)
• Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 10 (API 29) (emulator)

• No issues found!

[mg7237]

After updating minSDK to 19. Now the app compiles however it is giving run time error which trying to run on Android simulator. Below if the error log.

---

Running "flutter pub get" in flutter_app_example...
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...
✓ Built build/app/outputs/flutter-apk/app-debug.apk.
Waiting for Android SDK built for x86 to report its views...
Debug service listening on ws://127.0.0.1:50073/x5PM3IpmBSA=/ws
Syncing files to device Android SDK built for x86...
E/flutter (16700): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: ServicesBinding.defaultBinaryMessenger was accessed before the binding was initialized.
E/flutter (16700): If you're running an application and need to access the binary messenger before runApp() has been called (for example, during plugin initialization), then you need to explicitly call the WidgetsFlutterBinding.ensureInitialized() first.
E/flutter (16700): If you're running a test, you can call the TestWidgetsFlutterBinding.ensureInitialized() as the first line in your test's main() method to initialize the binding.
E/flutter (16700): #0 defaultBinaryMessenger. (package:flutter/src/services/binary_messenger.dart:97:7)
E/flutter (16700): #1 defaultBinaryMessenger (package:flutter/src/services/binary_messenger.dart:110:4)
E/flutter (16700): #2 MethodChannel.binaryMessenger (package:flutter/src/services/platform_channel.dart:143:62)
E/flutter (16700): #3 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:149:36)
E/flutter (16700): #4 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:332:12)
E/flutter (16700): #5 PdfViewer.enableAnalytics (package:flutter_pdf_viewer/flutter_pdf_viewer.dart:214:19)
E/flutter (16700): #6 main (package:flutter_app_example/main.dart:204:19)
E/flutter (16700): #7 _runMainZoned.. (dart:ui/hooks.dart:136:25)
E/flutter (16700): #8 _rootRun (dart:async/zone.dart:1190:13)
E/flutter (16700): #9 _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (16700): #10 _runZoned (dart:async/zone.dart:1630:10)
E/flutter (16700): #11 runZonedGuarded (dart:async/zone.dart:1618:12)
E/flutter (16700): #12 _runMainZoned. (dart:ui/hooks.dart:132:5)
E/flutter (16700): #13 _startIsolate. (dart:isolate-patch/isolate_patch.dart:301:19)
E/flutter (16700): #14 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)
E/flutter (16700):